pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-84775-Navvy_on_the_Line_G16.ps) >>/Users/jc/w/tmp/Tune-84775-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/abc/hornpipe/Navvy_on_the_Line_G16.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-84775-CMCIT.abc 142 ABC music file with the extracted tune(s)
Tune-84775-CMCIT.ps 6 PostScript
Tune-84775-CMCIT.txt 142 Plain-text file with the extracted tune(s)
Tune-84775-Navvy_on_the_Line_G16.abc 491 ABC music file with the extracted tune(s)
Tune-84775-Navvy_on_the_Line_G16.ps 35979 PostScript
Tune-84775-Navvy_on_the_Line_G16.txt 491 Plain-text file with the extracted tune(s)
Tune-84775-get.log 8583 Log file, useful mostly for debugging
These files should be available for 24 hours.